Castleton Corners (or Four Corners) is an upscale neighborhood of Staten Island, one of the five boroughs of New York City. It is in a region of the island often referred as the North Shore, Staten Island.

The word "corners" in the neighborhood's name refers to the intersection of Victory Boulevard and Manor Road, which forms its core. It was once called Centerville, but became more popularly known as Castleton Corners when a post office by that name was opened there in 1872. "Castleton" refers to Cassiltowne, County Kildare, Ireland, the birthplace of Thomas Dongan, the colonial governor of the Province of New York after it was obtained from the Dutch—who had called it New Amsterdam—in 1682. The post office later closed, but reopened in 1949, and today it is the general, or main, post office for Staten Island as a whole, its ZIP Code being 10314.

Castleton Corners is separated from its eastern neighbor Sunnyside by Castleton Hill, noted for the two churches that stand across from one another on its western ridge—a Moravian church (Castleton Hill Moravian Church) on one side of Victory Boulevard and a Roman Catholic church (St. Teresa's) on the other. To the north lies West Brighton, with a National Guard armory at the boundary between the two, with Westerleigh and Meiers Corners to the northwest and southwest, respectively, and Todt Hill rising to the south. The Todt Hill public housing project is actually in Castleton Corners in spite of its name.

The corner of Victory Boulevard and Manor Road has long been the center of an important commercial district, although its prominence has declined somewhat in recent decades due to the opening of the Staten Island Mall in 1973. The area had largely been built up by the time the Verrazano-Narrows Bridge opened in November 1964, meaning that Castleton Corners has been relatively unaffected by the dramatic upsurge in population the bridge's opening largely helped bring about, at least compared with most other neighborhoods on the island.

Castleton Corner is the location of P.S. 29 and St. Teresa's School.

Castleton Corners is served by the S61/S91, S62/S92, S66, S93, and X12/X42 routes on Victory Blvd, the X10/X11 on Gannon Avenue/Schmiht Lane, and the S54 on Manor Road. As part of the MTA's budget reduction plan, weekend service on the S54 was eliminated, due to low ridership (1,100 passengers throughout the weekend, with a cost per passenger of $7.57, one of the highest in the system). Passengers are advised to use the S57 and S61 as alternate routes. The S67, which ran during rush hours was eliminated because it duplicated the S57 and S66.

Annadale  Arden Heights  Arlington  Arrochar  Bay Terrace  Bloomfield  Brighton Heights  Bulls Head  Castleton  Castleton Corners  Charleston  Clifton  Concord  Dongan Hills  East Shore  Egbertville  Elm Park  Eltingville  Emerson Hill  Farm Colony  Fort Wadsworth  Graniteville  Grant City  Grasmere  Great Kills  Greenridge  Grymes Hill  Hamilton Park  Heartland Village  Huguenot  Lighthouse Hill  Livingston  Manor Heights  Mariners Harbor  Meiers Corners  Mid-Island  Midland Beach  New Brighton  New Dorp  New Springville  North Shore  Oakwood  Ocean Breeze  Old Place  Old Town  Pleasant Plains  Port Ivory  Port Richmond  Prince's Bay  Randall Manor  Richmondtown  Richmond Valley  Rosebank  Rossville  St. George  Sandy Ground  Shore Acres  Silver Lake  Snug Harbor  South Beach  South Shore  Stapleton  Stapleton Heights  Sunnyside  Todt Hill  Tompkinsville  Tottenville  Tottenville Beach  Travis  Ward Hill  Westerleigh  West New Brighton  West Shore  Willowbrook  Woodrow

Annadale - Arden Heights - Arrochar - Bay Terrace - Bloomfield - Bulls Head - Castleton Corners - Charleston - Chelsea - Clifton - Concord - Dongan Hills - Egbertville - Elm Park - Eltingville - Emerson Hill - Fort Wadsworth - Graniteville - Grant City - Grasmere - Great Kills - Greenridge - Grymes Hill - Heartland Village - Huguenot - Lighthouse Hill - Livingston - Manor Heights - Mariners Harbor - Meiers Corners - Midland Beach - New Brighton - New Dorp - New Springville - Oakwood - Ocean Breeze - Old Town - Pleasant Plains - Port Richmond - Princes Bay - Randall Manor - Richmondtown - Richmond Valley - Rosebank - Rossville - Rudolph Lake - Sandy Ground - Shore Acres - Silver Lake - South Beach - Stapleton - Stapleton Heights - St. George - Sunnyside - Todt Hill - Tompkinsville - Tottenville - Tottenville Beach - Travis - Ward Hill - Westerleigh - West New Brighton - Willowbrook - Woodland Beach - Woodrow -